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 * Licensed to the Apache Software Foundation (ASF) under one   *
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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
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 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
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 * under the License.                                           *
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package org.apache.james.imapserver.netty;

import java.net.InetSocketAddress;
import java.util.Set;

import org.apache.james.imap.api.ConnectionCheck;
import org.reactivestreams.Publisher;

import com.google.common.annotations.VisibleForTesting;

import reactor.core.publisher.Mono;

public class IpConnectionCheck implements ConnectionCheck {
    private Set<String> bannedIps = Set.of();

    @Override
    @VisibleForTesting
    public Publisher<Void> validate(InetSocketAddress remoteAddress) {
        String ip = remoteAddress.getAddress().getHostAddress();
        // check against bannedIps
        if (bannedIps.contains(ip)) {
            return Mono.error(() -> new RuntimeException("Banned"));
        } else {
            return Mono.empty();
        }
    }

    public void setBannedIps(Set<String> bannedIps) {
        this.bannedIps = bannedIps;
    }
}
